My Ore isn't spawning in the surface

I am making a mod where you mine for new silly ores, 2 of the ores aren't spawning at all, I checked what blocks to replace I set a decent value of groups in a chunk, I made sure it spawned in the surface (overworld), and made sure there were no restrictions or additional generation conditions. If there is something I am missing or I if an answer is available then please let me know.